Baileys Point is a freshwater site located within the Barren River Lake campground area. The topography consists of a series of small, protected coves featuring silt and gravel beds. Divers and snorkellers can expect mild currents and shallow-water conditions, making this location suitable for beginners. The site is accessed via the shore, with facilities including parking, toilets, and showers available nearby. Typical dives last approximately 45 minutes. Be aware of the thermocline, which is a common hazard in this freshwater environment. The site offers a 2/5 rating for snorkelling, providing a calm setting for shallow-water exploration.

The Narrows Swimming Area at Barren River Lake offers a freshwater snorkeling experience along a rocky shoreline. The site is defined by its limestone cliffs and submerged limestone ledges, which provide structure for the local environment. Snorkeling depths typically range from 1 to 5 metres, with an average depth of 3 metres. Conditions vary, with visibility generally between 1 and 3 metres and mild currents. Water temperatures can drop to 13.3°C in early April, necessitating appropriate thermal protection. Access is available from both shore and boat. Snorkelers should remain cautious of boat traffic in the area. Facilities including parking, toilets, showers, and changing rooms are available for visitors.

Quarry Road Beach is the largest beach on Barren River Lake, situated near the dam. The site features rocky underwater structures that provide habitat for freshwater fish. Due to its proximity to the dam, visibility at this location can reach up to 20 metres, often exceeding that of the lake's upper creek arms. This shore-entry site is suitable for beginners, offering a mild current for snorkelling. Divers and snorkellers should expect variable conditions typical of a freshwater lake environment.

Tailwater is a river snorkeling site situated directly below the dam at Barren River Lake. The topography consists of gravelly shoals within the flowing river channel. This site is suitable for advanced snorkelers only, as the water is subject to strong currents. Divers and snorkelers should be aware of potential hazards including low visibility and the risk of entanglement. Shore access is available, and the site provides basic facilities including parking, toilets, and showers. Due to the challenging conditions, this location is rated 2/5 for snorkeling.

Dismal Rock at the Barren River Lake tailwaters is a site defined by its unique geological formations near the Nolin Dam. Snorkellers should be aware that water temperatures here are often significantly lower than the main lake due to tailwater releases. The site is suited for intermediate snorkellers who can navigate moderate currents and potential down currents. Entry is via the shore, and visitors must remain vigilant regarding boat traffic, entanglement risks, and variable visibility. While calmer pockets offer improved conditions, the environment requires careful attention to the dynamic water flow characteristic of this tailwater area.

Brier Creek Point is a rocky point located in Barren River Lake, offering varied underwater topography compared to the surrounding sandy beaches. The site features submerged rock formations that provide structure within the freshwater environment. Depths range from 3 to 15 metres, with an average depth of 11 metres. Visibility is variable, typically between 1 and 6 metres. Divers and snorkellers may encounter mild currents and should remain aware of boat traffic in the area. Access is available via both shore and boat, with facilities including parking, toilets, showers, and a rinse station. The site is suited for intermediate skill levels.

Nolin Lake State Park Beach offers accessible shore entry into the freshwater environment of Barren River Lake. The site features a sandy shoreline and is suitable for beginners, with depths starting at 1 metre. Visibility typically ranges between 5 and 15 metres, though low visibility can occur. Water temperatures vary significantly by season, with early April readings between 49 and 52°F. Divers and snorkellers should note that water below 55°F requires appropriate thermal protection for safety. The site is equipped with parking and showers for visitor convenience, and a typical session lasts approximately 45 minutes. Current conditions at the site are generally mild.